The selected location is:

The elevation is 0 m ( 0 ft )
The gradient is: 0.0 percent
There is no aspect direction.
The local roughness is: 0.0 or flat
The location as decimal degrees (X,Y;Z) = -73.6552, 40.9837; 0 m

The state and county are New York: Westchester County 36119
The HUC is Bronx 02030102; Place point in HUC
The Omernik ecoregion is Northeastern Coastal Zone (more typical) 59
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Nearby named places (in order by distance)

1. Byram River; Connecticut: Fairfield Co. -73.6552, 40.9837 at a distance of 2 m
2. Byram River mouth; New York: Westchester Co. -73.6563, 40.9840 at a distance of 96 m
3. Port Chester Harbor; Connecticut: Fairfield Co. -73.6563, 40.9845 at a distance of 127 m
4. Channel Rock; Connecticut: Fairfield Co. -73.6535, 40.9854 at a distance of 238 m
5. Byram Point; Connecticut: Fairfield Co. -73.6563, 40.9859 at a distance of 261 m
6. Manursing Island Reef; New York: Westchester Co. -73.6596, 40.9845 at a distance of 379 m
7. Great Captain Rocks; Connecticut: Fairfield Co. -73.6499, 40.9840 at a distance of 449 m
8. Port Chester Harbor; New York: Westchester Co. -73.6604, 40.9857 at a distance of 489 m
9. North Manursing Island; New York: Westchester Co. -73.6579, 40.9795 at a distance of 518 m
10. Kirby Pond; New York: Westchester Co. -73.6660, 40.9804 at a distance of 978 m

The 7.5 minute series topographic maps for that area